A context diagram is drawn in order to define and clarify the boundaries of the software system. In the below information record context diagram, we see how a user validates their account on a website that allows online booking of a movie. As per the context diagram, the main objective of an information record context diagram is to focus attention on external factors and events that should be considered in developing a highly-efficient system. So, when a registered user logs into the website, the system internally checks out the details of the movie, along with the availability in a particular theater and the amount that has to be paid. Once the registered user selects the seat and pays the amount, the external server confirms the booking and updates the record accordingly. Try creating the industry system context diagram using EdrawMax.